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Clarify our OOP semantics across the codebase (#9586)
Basically: * Use `extend` for class definitions * Use `new` for object instantiations That includes some minor code cleanups along the way: * Updated `Widget`'s docs to make the semantics clearer. * Removed `should_restrict_JIT` (it's been dead code since https://github.com/koreader/android-luajit-launcher/pull/283) * Minor refactoring of LuaSettings/LuaData/LuaDefaults/DocSettings to behave (mostly, they are instantiated via `open` instead of `new`) like everything else and handle inheritance properly (i.e., DocSettings is now a proper LuaSettings subclass). * Default to `WidgetContainer` instead of `InputContainer` for stuff that doesn't actually setup key/gesture events. * Ditto for explicit `*Listener` only classes, make sure they're based on `EventListener` instead of something uselessly fancier. * Unless absolutely necessary, do not store references in class objects, ever; only values. Instead, always store references in instances, to avoid both sneaky inheritance issues, and sneaky GC pinning of stale references. * ReaderUI: Fix one such issue with its `active_widgets` array, with critical implications, as it essentially pinned *all* of ReaderUI's modules, including their reference to the `Document` instance (i.e., that was a big-ass leak). * Terminal: Make sure the shell is killed on plugin teardown. * InputText: Fix Home/End/Del physical keys to behave sensibly. * InputContainer/WidgetContainer: If necessary, compute self.dimen at paintTo time (previously, only InputContainers did, which might have had something to do with random widgets unconcerned about input using it as a baseclass instead of WidgetContainer...). * OverlapGroup: Compute self.dimen at *init* time, because for some reason it needs to do that, but do it directly in OverlapGroup instead of going through a weird WidgetContainer method that it was the sole user of. * ReaderCropping: Under no circumstances should a Document instance member (here, self.bbox) risk being `nil`ed! * Kobo: Minor code cleanups.
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@@ -23,22 +23,18 @@ end
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local InputContainer = require("ui/widget/container/inputcontainer")
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local CenterContainer = require("ui/widget/container/centercontainer")
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local FrameContainer = require("ui/widget/container/framecontainer")
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local RightContainer = require("ui/widget/container/rightcontainer")
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local OverlapGroup = require("ui/widget/overlapgroup")
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local ImageWidget = require("ui/widget/imagewidget")
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local TextWidget = require("ui/widget/textwidget")
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local GestureRange = require("ui/gesturerange")
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local UIManager = require("ui/uimanager")
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local Blitbuffer = require("ffi/blitbuffer")
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local Geom = require("ui/geometry")
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local Device = require("device")
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local Screen = Device.screen
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local Input = Device.input
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local Font = require("ui/font")
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local dbg = require("dbg")
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--dbg:turnOn()
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local TouchProbe = InputContainer:new{
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local TouchProbe = InputContainer:extend{
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curr_probe_step = 1,
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}
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